Well drilling and pumping temper-screw.



A. M. STEWART.

WELL DRILLING AND PUMPlNG TEMPER SCREW.

APPLICATION FILED NOV. L6. 1914- Patented Apr. 25, 1916.

INVENTOR WITNESSES maoQcit.

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ANDREW M. STEWART, F TOLEDO, OHIO, 1* .SSIG'NOR TO THE NATIONAL SUPPLYCOM- IPANY, 0F TOLEDO, OHIO, A CORPORATION OF OHIO. J

WEL DRILLING AND PUMPI G TEMPER-SCREW.

Specification of Letters Patent.

Patented Apr. 25, 1916..

' Application filed November 16, 1914. Serial No. 872,310. I

I To all whom it may concern Be 'it known that 1, ANDREW M. STEWART,

a citizen of the United States, residing at Toledo, in the county ofLucas and State of Ohio, have invented new and useful llmprovements inWell Drilling and Pumping Tempe -Screws, of which the following 1s aspecification.

My invention relates to temper screwsfor stood in connection with theaccompanying drawings, in which Figure 1 is a side view, partly brokenaway, of a temper screw constructed in accordance with the principles ofmy invention and accompanied with portions of a walking beam and a drillor pump cable; Fig. 2, an elevation looking at Fig. 1 toward the left;Fig. 3, a section just below the part marked 14 on Fig. 1; Fig. 4, asection on the line TV-IV, Fig. 1; Fig. 5, an elevation showing amodification of the upper end of the T; and Fig. 6, a side elevation ofa second modification of Fig. 1, parts being broken away.

On Figs. 1 to 4, 1 represents a walkingbeam having the open-ended slot2, in which the vertical parallel side-bars 3 are suspended by means ofthe cross-bar 4 supported in depressions or otherwise on the top of thewalking-beam. The cross-bar 4 is clamped between the two clamp-members 5and 6, through both of which the upper ends of the side bars pass, themembers being drawn tightly into engagement with the crossbar by thenuts"? working on the side-bars and against the clamping members.Heretofore, it has been common to make the bars 3 and the cross-bar 4 ina single piece called a T.

In Fig. 5, T have shown the 'II' constructed as follows: The cross-barand the clamping members of Figs. 1 to 4 have been made of a singlepiece of metal, comprising the block 8 having the two lateralprojections or trunnions, which rest on the walking beam the same as theends of the cross-bar 4. In Figs. 1

to 4 the cross-bar isseparate from the means for supporting theside-bars, while in Fig. 5, it is integral with the said means. The sidebars both extend through the block vand are connected thereto by thenuts 10 working on the side-bars and engaging the upper and readilyexchanged for fresh ones and their cost is slight. Heretofore thesectional nuts have been made integral with the side-bars, whichrequired a new pair of side-bars when either section or half of the nutsneeded replacement; However, as the side bars were integral with thecross-bar as well as with the half-nuts, a breakage or other defect ofany part of the integral structure, required a replacement of the entirestructure.

The main screw 13 works in the'said halfnuts which are drawn toward eachother and into threaded engagement with the screw by means of the yoke14 having one end member in engagement with the outer face of onehalf-nut, the other end member of the yoke being provided with theT-screw 15 with its inner end in engagement with the outer face of theother half-nut. The lower end of the screw is swiveled in the horizontalbar 16, on the ends of which the links 17 are suspended. The screw isprovided with the cross-handle 18 by which it may be rotated.

18 is the usual cross-bar on the top of the screw 13.

To the lower end of each link 17, T suspend the eye-bolts or rods 19threaded at their lower ends. These eye-bolts extend down through therespective clamp-members 20 between which the cable or rope 21 isclamped by means of a second yoke 22 and T-screw 23. The members 20 arepreferablysecured on the rods 19 and the nuts 24 are screwed up againstthe bottoms of the clampmembers.

In Fig.6, the side rods support the clampmembers- 20 directly, the nuts24: being screwed on the side-bars instead of on the eye-bolts. Theclamp-members are connected to the side-bars in the same manner that thehalf-nuts 11 are on Figs. 1 and 2. It has been the usual practiceto makeeach of the clamp-members integral with the means for suspending them onthe links 17. By my improvement, if one clamp-member or one eye-boltneeds replacing, it is only necessaryto replace a part thereof. V

I claim 1. In a well pumping and drilling apparatus, a reciprocatingmember and a temper screw, the latter containing a pair of clampmembers,vertical bars extending through the clamp-members, and a horizontalcrossbar clamped between the clamp-members and bearing on thereciprocating member. 2. In a well pumping and drilling apparatus, areciprocating member having a forked end, a pair of trunnions supportedby the members of the fork, a block supporting the trunnions, a pair ofvertical sidebars extending through the block at opposite sides of thetrunnions, and means for removably securing the side-bars to the blockand in fixed relationthereto.

8.In a well pumping or drilling apparatus, areciprocating member, a pairof vertical side-bars suspended on the same, sectional nuts each havingan opening to receive one of the side bars, means for detachablyconnecting each sectional nut to the side bar therein, a vertical screwcooperating with the sectional nuts, and means for releasably holdingthe sections of the nut in cooperative relation with the screw.

4. In a well pumping or drilling apparatus, a temper-screw having a pairof side bars, sectional nuts having holes in which the lower ends of thebars are removably seated, a screw, and means for releasably holding thesectional nuts in threaded connection with the screw.

5. In a well pumping or drilling apparatus, a vertically-reciprocatingmember, side-bars threaded at both ends, a horizontal cross-bar bearingon the reciprocating member, a support for the cross-bar, means fordetachably connecting the upper ends of the side-bars to the saidsupport, half-nuts through which the lower ends of the sidebars extend,for detachably connecting the half-nuts to the side-bars, a verticalscrew between the half-nuts, and means for holding the half-nuts inengagement with the screw.

6. In a well pumping or drilling apparatus, a vertically-reciprocatingmember, side-bars threaded at both ends, a horizontal cross-bar bearingon the reciprocating me1nher, a support for the cross-bar, means fordetachably connecting the upper ends of the side-bars to the saidsupport, half-nuts through which the lower ends of the sidebars extend,provided with means for detachably connecting the half-nuts to sidebars,nuts on the side-bars for locking the half-nuts and sidebars in rigidrelation to each other.

7. In a well pumping or drilling apparatus, a reciprocating member, apair of vertical side-barssuspended thereon, a vertical member extendingdownwardly between the lower ends of the side-bars, separate anddistinct devices through which the lower ends of the side-bars extend,and which are removably secured thereto, the said devices being arrangedto engage opposite portions of the said vertical members, and means forcausing the said devices to releasably hold the said vertical memberbetween them.

8. In a well pumping or drilling apparatus, a vertically reciprocatingmember, a vertical screw, side-bars threaded at both ends, a horizontalcross-bar bearing on the reciprocating member, a support for thecross-bar, nuts on the side bars for detachably securing the support tothe upper ends of the side-bars, half-nuts provided with means fordetachably connecting the half-nuts to the lower ends of the side-bars,nuts on'the side-bars for detachably locking the halfnuts inposition,and means for holding the half-nuts in engagement with the screw.

Signed at Toledo, Ohio, this 10th day of November A. D. 1914:.

ANDREW M. STEWART.

Witnesses:

C. H. \AUFDERHEIDE, F. F. BRAITHW'AITE.

